Too optimistic I think my friend...currently BTc trades at 17.500$....it still has a loooong way to go!
That's what they said beginning of 2017, price is ~$1k, people saying that the top will be $5k, but look at how that year ends, we reaches all time high of almost $20k. So never underestimate the resiliency of the bitcoin market. At the current price, it's just 2x, so I wouldn't be surprised in 2021 that $35k or even more at within our grasp.
$35k is not really that too high to reach because looking at the current price, it's very possible for bitcoin to reach another ATH even early next year. We just need to be realistic sometime not to expect too impossible for bitcoin because it might turn into another hype. But $35k to $42k is very attainable and i guess most of us here agrees to it.